Run a Matlab script below, and it was stuck at line $6...$

$\%$ Read in the image

original$\_$image $=$ imread$(\text{'}$street$.$jpg$\text{'})$;

$\%$ Compute the Radon transform

theta $=0$:$1$:$179$;

$[$R$,$ xp$]=$ radon$($original$\_$image, theta$)$;

$\%$ Initialize variables to store results

mse$\_$results $=$ zeros$(4,1)$;

reconstructed$\_$images $=$ cell$(4,1)$;

$\%$ Perform inverse Radon transform with different filters and interpolations

filters $=\{\text{'}$Ram$-$Lak', 'Hamming', 'Cosine', 'Cosine'$\}$;

interpolations $=\{\text{'}$linear$\text{'},$ 'linear', 'spline', 'nearest'$\}$;

for i $=1$:$4$

reconstructed$\_$images$\{$i$\}=$ iradon$($R$,$ theta, 'linear', filters$\{$i$\},$ interpolations$\{$i$\})$;

$\%$ Calculate the MSE

mse$\_$results$($i$)=$ sum$($sum$(($double$($original$\_$image$)-$ reconstructed$\_$images$\{$i$\}).^2))/$ numel$($original$\_$image$)$;

end

$\%$ Display the results

figure;

subplot$(2,3,1)$;

imshow$($original$\_$image$)$;

title$(\text{'}$Original Image'$)$;

subplot$(2,3,2)$;

imagesc$($theta$,$ xp$,$ R$)$;

colormap$($gca$,$ 'hot'$)$;

title$(\text{'}$Radon Transform'$)$;

for i $=1$:$4$

subplot$(2,3,$ i $+2)$;

imshow$($reconstructed$\_$images$\{$i$\},[])$;

title$([\text{'}$Reconstructed Image $-\text{'},$ filters$\{$i$\},\text{'}/\text{'},$ interpolations$\{$i$\},\text{'}-$ MSE: $\text{'},$ num$2$str$($mse$\_$results$($i$))])$;

Error below:

end$$ problem$8$

Error using radon

Expected input number $1,$ I, to be two$-$dimensional.

Error in radon $($line $65)$

validateattributes $($I$,\{\text{'}$numeric$\text{'},$ 'logical'$\},\{\text{'}2$d$\text{'},$ 'nonsparse'$\},$mfilename, $\text{'}$I$\text{'},1)$ ;

Error in problem$8(1$ine $6)$

$[R,xp]=$ radon$($original$\_$image, theta$)$;